	US 12,192,314 B2
	Clock quartz oscillator synchronization method, apparatus and system
Qichao Zhao, Beijing (CN); and Ran Yang, Beijing (CN)
Assigned to KINGFAR INTERNATIONAL INC., Beijing (CN); and NANJING KINGFAR HEALTH TECHNOLOGY INC., Jiangsu (CN)
Filed by KINGFAR INTERNATIONAL INC., Beijing (CN); and NANJING KINGFAR HEALTH TECHNOLOGY INC., Jiangsu (CN)
Filed on Dec. 22, 2022, as Appl. No. 18/086,928.
Application 18/086,928 is a continuation of application No. PCT/CN2022/097367, filed on Jun. 7, 2022.
Claims priority of application No. 202111343650.2 (CN), filed on Nov. 13, 2021.
Prior Publication US 2023/0155807 A1, May 18, 2023
Int. Cl. H04L 7/00 (2006.01)

CPC H04L 7/0037 (2013.01)

10 Claims

1. A clock quartz oscillator synchronization method, comprising:

when a calculation unit is in network connection, calculating a first deviation between a calculation unit time and a network clock time;

updating a fundamental deviation based on the first deviation;

updating the calculation unit time and calculating an actual refresh frequency of the calculation unit based on the fundamental deviation;

calculating a second deviation between the calculation unit time and a sensor time; and

updating the sensor time and calculating an actual interruption frequency of a sensor based on the second deviation, wherein the calculating an actual interruption frequency of a sensor comprises:

calculating an initial interruption time interval t₁based on an initial interruption frequency f₀;

calculating an actual interruption time interval t₂based on the initial interruption time interval t₁and the second deviation x₂, wherein the actual interruption time interval t₂=t₁+x₂×10⁶; and

calculating the actual interruption frequency f₁based on the actual interruption time interval t₂, wherein the actual interruption frequency